scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 415
Joseph John Thomson 1856-1940 J J Thomson was born in cheetham Manchester On December 18 1856 Thomson is known as the man who discovered and identified electrons He studied at Owens college Manchester in 1870 In 1876 he studied in at Trinity College Cambridge as a minor scholar In 1884-1918 at the age of 27 he became Cavendish Professor of Experimental Physics and head of the Cavendish Laboratory He was Honorary Professor of Physics Cambridge and Royal Institution London Thomsons early interest in atomic structure was reflected in his treatise on the motion of Vortex Rings that won him the Adams prize in1884 In 1896 Thomson visited America to give a course of four lectures which summarized his current researches at Princeton The lectures were published as discharge of electricity through gases 1897 On his return from America he achieved the best work of his life An original study of cathode rays culminating in the discovery of the electron this was announced to the royal Institution on Fri April 301897 Returned to America in 1904 to discuss six lectures on electricity and matter at Yale University The discussion contained important suggestions as to the structure of the atom He discovered a method for separating different kinds of atoms and molecules by the positive rays and idea developed by Aston Dempster and others towards the discovery of many isotopes Thomson subsequently turned his attention to positively charged ions His research showed that neon gas was made up of a combination of two different types of ion each with different charge mass or both He did this by using magnetic and electric fields to deflect the stream of positive ions of neon gas onto two different types of a photographic plate The demonstration clearly pointed to the possibility that ordinary elements might exist as isotopes varieties of atoms of the same element which have the same atomic number but different mass
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA